| IABA | intra-aortic balloon assistance |
|---|---|
| IMA | Industrial Medical Association; inferior mesenteric artery; Interchurch Medical Assistance; internal... |
| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
| MAA | macroaggregated albumin; Medical Assistance for the Aged; melanoma-associated antigen; moderate apla... |
| MAT | manual arts therapist; master of arts in technology; mean absorption time; medical assistance team (... |